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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Look for infection - split - and rupture of the penis






2. Produce testosterone. located between the seminiferous tubules






3. Milk ~305 days - dry 60 days prior to calving






4. Can survive ~7 days in cow. vast majority <48 hours






5. 19-23 (21) days






6. Contains and regulates the temp of the testes for sperm production






7. Microscopic - make sure not sterile - very few bulls are actually tested






8. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






9. Front feet and head first. (except for hogs and dogs)






10. Important 'landmark' during palpation






11. When are dairy cattle dehorned?






12. Allows extension of penis without fibro-elastic penis






13. 16-20 hours






14. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






15. Animals which have many estrous periods per year (ex: cow - sow)






16. Parturition is controlled by...






17. Actual heat cycle (period)






18. When are steers and heifers weaned from bottle feeding?






19. 283 days






20. (LH) stimulates the Leydig cells to produce testosterone






21. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






22. FEED






23. Why Dairy calves are fed powdered milk.






24. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






25. Failure to have one testis (gonad) to descend






26. 30 hours after estrus begins






27. Depository for semen during insemination. where urine leaves the body






28. Look for infection - split - and rupture of the penis






29. (LH) causes female's egg to break (her period)






30. Produce testosterone. located between the seminiferous tubules






31. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






32. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






33. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






34. Milk is 15% ________ and 85% __________.






35. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






36. What about the sperm for a bull which has been castrated but still has testicles?






37. 16-20 hours






38. 147 days






39. Larger the cow - more milk is produced; smaller the cow - less milk is produced






40. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






41. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






42. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






43. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






44. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






45. Animals which have only one estrous cycle (ex: dog - fox)






46. (LH) causes female's egg to break (her period)






47. Implies the amount of estrogen production






48. 1-2 days






49. Implies the amount of estrogen production






50. Urinary calculi.